Climatological Report (Daily)
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000
CDUS46 KSEW 190831
CLISEA


CLIMATE REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
131 AM PDT THU OCT 19 2017


...................................

...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR OCTOBER 18 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1945 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         64    358 PM  70    1974  59      5       58
  MINIMUM         47    731 AM  32    1949  45      2       49
  AVERAGE         56                        52      4       54

PRECIPITATION (IN)
  YESTERDAY        1.35R         1.19 1958   0.11   1.24     0.08
  MONTH TO DATE    1.99                      1.61   0.38     5.97
  SINCE OCT 1      1.99                      1.61   0.38     5.97
  SINCE JAN 1     31.00                     23.70   7.30    30.75

SNOWFALL (IN)
  YESTERDAY        0.0          MM      MM                   0.0
  MONTH TO DATE    0.0                                       0.0
  SINCE OCT 1      0.0                                       0.0
  SINCE JUL 1      0.0                                       0.0
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY        9                        13     -4       11
  MONTH TO DATE  207                       189     18      169
  SINCE SEP 1    285                       321    -36      278
  SINCE JUL 1    292                       406   -114      299

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE SEP 1     75                        21     54        3
  SINCE JAN 1    392                       189    203      291
..................................................................


WIND (MPH)
  RESULTANT WIND SPEED  11   RESULTANT WIND DIRECTION   S (180)
  HIGHEST WIND SPEED    35   HIGHEST WIND DIRECTION     S (190)
  HIGHEST GUST SPEED    50   HIGHEST GUST DIRECTION     S (190)
  AVERAGE WIND SPEED    13.9


SKY COVER
  AVERAGE SKY COVER 1.0


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  HEAVY RAIN
  RAIN
  LIGHT RAIN
  FOG


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    93          1000 AM
 LOWEST     67           400 PM
 AVERAGE    80

..........................................................


THE SEATTLE-TACOMA WA AIRPORT CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   58        72      2014
 MINIMUM TEMPERATURE (F)   45        28      1949


SUNRISE AND SUNSET
OCTOBER 19 2017.......SUNRISE   734 AM PDT   SUNSET   613 PM PDT
OCTOBER 20 2017.......SUNRISE   736 AM PDT   SUNSET   611 PM PDT


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




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